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doc16563 Biochar.pdf
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"text": "Binaya Baral, Graduate Research Assistant\nDr. Anuj Chiluwal, Assistant Professor of Agronomy"
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"text": "Biochar is a carbon-rich material produced by heating wood, crop residues, or other plant materials in low oxygen (pyrolysis). Its porous, stable structure makes it a long-lasting soil amendment that can help retain water and nutrients. Its properties and effects may vary with the feedstock and production conditions."
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"text": "Many Kentucky soils are moderately acidic and lose nutrients after heavy rainfall. Declining organic matter and poor soil structure reduce crop vigor and long-term productivity. Biochar can help by:"
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"text": "Biochar supplies base cations and alkalinity that neutralize acidity. Incorporation increases pH and stabilizes acidity over time, improving nutrient availability and reducing Al stress. Kentucky State field results showed measurable increases in soil pH during the first two years after biochar application at 12 Mg ha[p1.17.1] yr[p1.17.2] in a continuous soybean cropping system.",
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"text": "HV spot mag * WD det mode HFW 50 µm ——\n5.00 kV 3.0 692x 12.1 mm ETD SE 184 µm University of Kentucky",
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Page 2
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"text": "Recommended Rates: The Kentucky State field study evaluated an annual biochar rate of 12 Mg ha[p2.2.1] (approximately 5.4 tons acre[p2.2.2]). Rates may vary with soil conditions, crop, biochar properties, and management goals. Follow product guidance and begin with a small demonstration area before treating an entire field.",
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"text": "• Greatest benefits occur in:",
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"text": "Choose biochar from a reputable supplier that identifies the feedstocks and intended use.",
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"text": "Early results from the ongoing Kentucky State study showed increased soil pH, buffering capacity, organic matter, and total carbon in silty loam soil during 2023–2024. Short-term changes in soil nutrients and water-holding capacity were small, and seasonal rainfall remained the main influence on soil moisture. Long-term monitoring is continuing under Kentucky field conditions."
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"text": "We thank Dr. Ammar Bhandari and Mr. Jacob Brown for their time and thoughtful review of this publication. We acknowledge USDA-NIFA Capacity Building Grant (Award Number: 2023-38821-39960) for the financial support."
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"text": "Baral, B., Khatri, D., Poudel, S., Pun Magar, L., Mukherjee, A., & Chiluwal, A. (2026). Response of acidic silt loam soil properties to biochar application under soybean cultivation. Frontiers in Agronomy, 8, 1719143. https://doi.org/10.3389/fagro.2026.1719143",
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